package com.example.controller;

import com.example.pojo.Result;
import com.example.pojo.User;
import com.example.service.UserService;
import com.example.utils.JwtUtil;
import com.example.utils.Md5Util;
import com.example.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {

    @Autowired
    private UserService userService;

    @PostMapping("/register")   //注册
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
        //查询用户
        User u = userService.findByUserName(username);
        if(u == null){
            //没有被占用
            //注册
            userService.register(username,password);
            return Result.success();
        }else{
            //占用
            return Result.error("用户名已被占用");
        }
    }

    @PostMapping("/login")      //登录
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password){
        //查询用户是否存在
        System.out.println(username);
        User loginUser = userService.findByUserName(username);
        if(loginUser == null){
            return Result.error("用户不存在");
        }
        if(Md5Util.encrypt(password).equals(loginUser.getPassword())){
            Map<String,Object> map = new HashMap<>();
            map.put("id",loginUser.getId());
            map.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(map);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }

    @GetMapping("/userInfo")        //获取用户全部信息
    public Result<User> userInfo(){
        Map<String,Object> map = ThreadLocalUtil.get();
        User user = userService.findByUserName(map.get("username").toString());
        return Result.success(user);
    }

    @PutMapping("/update")      //更新用户信息
    public Result<User> update(@RequestBody@Validated User user){
        userService.update(user);
        return Result.success();
    }

    @PatchMapping("/updateAvatar")  //更新头像
    public Result updateAvatar(@RequestParam@URL String avatar){
        userService.updateAvatar(avatar);
        return Result.success();
    }

    @PatchMapping("/updatePassword")
    public Result updatePassword(@RequestBody Map<String,String> params){
        //校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        if(!StringUtils.hasText(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要参数");
        }

        //校验原密码
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = map.get("username").toString();
        User loginUser = userService.findByUserName(username);
        if(!loginUser.getPassword().equals(Md5Util.encrypt(newPwd))){
            return Result.error("原密码不正确");
        }
        //校验新密码和确认密码
        if(!rePwd.equals(newPwd)){
            return Result.error("两次填写的新密码不一样");
        }

        userService.updatePassword(newPwd);
        return Result.success();
    }


}
